Solution, not hints:
Gur "vagraqrq" fbyhgvba vf: hfr gur 2k fryrpgvba gb pbcl gur obggbz-evtug ohggba (+purrfr) naq cnfgr vg vagb gur znva ebbz fb lbh pna chfu purrfrf bagb gur obggbz ohggbaf jvgubhg trggvat genccrq
Gur "purrfr"/jvaavat fbyhgvba vf: tb nebhaq naq trg haqrearngu gur evtug fryrpgvba fb lbh pna qrfgebl gur genc qbbe sebz orybj